... commutator side bearing整流子侧支座 composite bearing多层轴瓦,复合轴承 compressed air bearing压缩空气轴承,压气轴承 ...
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... 轴瓦黄铜 axle brass 多层轴瓦 composite bearing ; multilayer bearing 轴瓦龟裂 busbar mosaic cracking ...
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